Aeroplane



E. L. CROZIER AEROPLANE Filed July 30 1923 2 Sheets-Sheet 1 if i. Craig:

Oct. 23, 1923.

E. L. CROZEER AEROPLANE 1925 2 ShGtB-Sheet 2 Filed July 30 4 1. Croz ale/I generally simplify lithe above s re ses WKEB L. QdQZXER, E 133333937, QElG.

AERQEMR'E.

Application filed July 3 i928.

To all coimm concern Be it known that I, ELMER L. Cnozinn, a citi'l n of the United States, residing at in the county o'f- Montgoinery and sit one), have invented certain new "fol improvements in Aeroplancs, of the following is a specification.

s invention. relates to certain new and improvements in aeroplanes, and has particular reference to devices of this hind embodying two planes and commonly own as bi-planes.

The primary object of the invention to and improve devices of kind whereby the same may be made more durable in Construction and compact in arrangement of parts.

"Another object of the invention is to proa de eilicient form and arrangement or 2:: arranged longitudinally of the fuse and 8 are provided,

the commonly employed later 1 planes or wings now in use, the can .ion and form of which necessarily valves frailty of construction.

'llither objects will appear as the nature of the invention is better understood, and the same consists in the novel form, combination and arrangement of parts hereinafter rnore fully described, shown in the accompanying drawings and claimed.

the drawings, wherein like reference characters indicate corresponding parts throughout the several views,

Figure 1 is a top plan view of an aero-,

lageinstead of plane constructed in accordanw with the present invention,

I igure 2 is a side elevational view of the device shown in Figure 1,

ll igure 3 is a transverse sectional view taken on line 3.-3 of Figure 1,

-Figure 4' is a transverse sectional view taken on line 4-l of Figure 1, and

Figure 5 is a view similar to Figure 4 taken on'line 5-5 of F i re 1.

Referring more in etail to the drawing, the device embodies a main or passenger carrying fuselage 5 provided with a editable lending gear 6 and resilient ground engaging tail member 7 for retarding the forward movement of the aeroplane upon making a landing.

In accordance with the present invention, pair of super-imposed longitudinal planes the plane 9 being somewhat wider than the fuselage 5 and rigidly consti acted on'the'top of the latter as the Eerie! l-io, 65%,589.

shown in Figure -1, and" the upper planed the. intermediate adapted to carry any suitable or preferred form of driving mechanism for the propeller 11 which is disposed vertically between the planes at the forward end of the engine fuselage and adjacent the forward end of the planes. The struts 9 may be suitably braced as at 12, and a tapered rearwardly widening vertical tail rudder is fixed between the rear ends of the planes 7 and 8 as clearly shown in Figure l, a movable tail rudder being provided as at 14 at the rear end of the station 5y rudder 13 and adapted to be suitably controlled for determining the lateral course of the aeroplane. Horizontal rudders 15 are also provided at the rear ends of each of the planes 7 and 8 as.

clearly shown in ligures 1 and 2.

The form of each of the planes 7 and 8 is substantially the same, and will be readily apparent from the drawing, particularly Figures 3 to 5 inclusive. As shown, these planes are transversely curved so as to provide concavities at the under sides thereof, which concavities are of maximum depth at the forward ends of the planes and gradually taper narrower and shallower toward the rear of the aeroplane where they assume a flat form as shown in Figure 5, and the f0rward ends of these planes are preferably formed with lips as at 16 to give the desired streamline eflect. This streamline effect will of course be embodied in the construc tion 'of the fuselage 5, also.

Particular. attention is called to the wing or plane curvature, These wings or planes are formed at their forward ends with a cross section as shown in Figure 3 conforming to one half of an elongated ellipse, and the points of greatest curvature at the sides of the planes converge rearwardly toward center as shown in Figures 2 and l and assume a fiat form, as shown in Figure 5 at their rear ends.

It is believed that the construction and no I ' monnte operation as well as the advantages of the eesses at the under sides thereof, said recesses invention will be readily apparent to those being oil major depth at the forward ends of v skilled in the art from the foregoing dethe planes and gradually tapering shallower scription. I toward the rear ends of the plane, said planes What it claim as new is being forrned at their forward ends with a An aeroplane comprising'e main fuselage cross sectional form conforming to one-halt a hailing rigid upper and'lower planes ofelonof an elongated ellipse and with the points gated forms extend ng longitudinally thereof greatest curvature thereof at the sides of of in spaced relation, an engine tuselage the planes and converging rearwardly todbetween said planes and supporting Ward the center and assuming a fiat form a verticalpropeller at its forward end heat the rear ends thereof. on tween the forward end portion of said planes, In testimony whereof I afi x my signature. said planes being of upwardly curved form a in cross section to provide longitudinal re- ELMER L. CRQZIER. 

